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Composite biological coating agent and method for using the same in fresh keeping of blueberry

A film-coating agent, blueberry technology, applied in the direction of preservation of fruits and vegetables, protection of fruits/vegetables with a coating protective layer, application, etc., can solve the problems of low storage of fruits in ice temperature, achieve long preservation time, inhibit corruption, and promote production increase The effect of increasing income

Active Publication Date: 2013-02-27
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on ice temperature storage of fruits at home and abroad

Method used

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  • Composite biological coating agent and method for using the same in fresh keeping of blueberry
  • Composite biological coating agent and method for using the same in fresh keeping of blueberry
  • Composite biological coating agent and method for using the same in fresh keeping of blueberry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of chitosan composite biofilm solution: Take 10 liters of coating preservative as an example, dissolve 100.0g of citric acid (Shanghai Jinjinle Industrial Co., Ltd.) Co., Ltd.), ultrasonic 10min (scientz-ⅡD ultrasonic cell pulverizer, Ningbo Xinzhi Biotechnology Co., Ltd.), disperse evenly, and then dissolve 300.0g chitosan (Jinan Haidebei Marine Bioengineering Co., Ltd.) , add 15.0g propylene glycol (Zhangjiagang Free Trade Zone Yexing Chemical Trade Co., Ltd.), 10.0g glycerin (Guangzhou Nanjia Chemical Co., Ltd.), 10.0g nisin (Beijing Newt Biotechnology Development Co., Ltd.), 5.0g lysozyme (Nanning Pangbo Biological Engineering Co., Ltd.), stir and mix;

[0035] (2) Blueberry pretreatment: The picked blueberries are quickly ventilated and forced to pre-cool, the wind speed is 10 m / s, the humidity is 75%, the time is about 1 hour, and the blueberries with fresh quality, no trauma, and no diseases and insect pests are selected for subsequent treatment; ...

Embodiment 2

[0039] (1) Preparation of chitosan composite biofilm solution: Take 5 liters of coating preservative as an example, dissolve 40.0g of citric acid (Shanghai Jinjinle Industrial Co., Ltd.) Co., Ltd. product), ultrasonic 10min (scientz-ⅡD ultrasonic cell pulverizer, Ningbo Xinzhi Biotechnology Co., Ltd.), disperse evenly, and then dissolve 100.0g chitosan (Jinan Haidebei Marine Bioengineering Co., Ltd.) , add 7.0g propylene glycol (Zhangjiagang Free Trade Zone Yexing Chemical Trade Co., Ltd.), 6.0g glycerin (Guangzhou Nanjia Chemical Co., Ltd.), 6.0g nisin (Beijing Newt Biotechnology Development Co., Ltd.), 2.0g lysozyme (Nanning Pangbo Biological Engineering Co., Ltd.), stir and mix;

[0040] (2) Blueberry pretreatment: The picked blueberries are quickly ventilated and forced to pre-cool, with a wind speed of 15 m / s, a humidity of 85%, and a time of about 2 hours. Select blueberries with fresh quality, no trauma, and no pests and diseases for subsequent processing;

[0041] (3)...

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Abstract

The invention relates to a composite biological coating agent and a method for using the composite biological coating agent in fresh keeping of blueberry, belonging to the field of food processing. The composite biological preservative film is prepared from biogenetically derived water-soluble chitosan, nisin, lysozyme and nano silicon polyoxide, propylene glycol, glycerin and citric acid in proportion. According to the invention, fresh blueberries are subject to pretreatment, are coated with chitosan composite biological preservative film, dried in cold air, and preserved in a cold storage, wherein the temperature in the cold storage is the freezing point temperature of the blueberry, and the relative humidity is 90-95%; and the blueberries can still keep special flavor, color and nutritional components after being preserved for 50 days under the conditions. The blueberries have high commercial value and good economic benefit. The method disclosed herein has the advantages of mild conditions for preparing the composite biological coating agent, simple operation, and easiness in popularization.

Description

1. Technical field [0001] The invention relates to a composite biological coating agent and a method for keeping blueberries fresh, belonging to the field of food processing. 2. Background technology [0002] Blueberry (Vaccinium spp.) mainly has four major planting areas in my country: Changbai Mountain, Greater and Lesser Khingan Mountains, Liaodong Peninsula, Jiaodong Peninsula, Yangtze River Basin and South China. Blueberry fruit is dark red, purple red, blue purple or black, with delicate flesh, very small seeds, moderate sweet and sour, pleasant aroma, and contains various physiologically active substances such as anthocyanins, flavonols, phenolic acids, etc., which can prevent brain aging, It has various physiological activities such as strengthening the heart, anti-cancer, softening blood vessels, and enhancing human immunity. [0003] The water content of blueberry fruit is as high as 80-90%. Due to the delicate tissue, it is easy to rot and deteriorate after harve...

Claims

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Application Information

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IPC IPC(8): A23B7/16A23B7/154
Inventor 张丽霞周剑忠黄开红刘小莉李莹王英马艳弘
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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